Sansa of gourd, wood and iron: West Africa, Nigeria, Jos, Birom people, c. 1950

Sansa (thumb piano), vibrating cane tongues mounted on closed wooden box, ornamented with burnt cross-hatchings: West Africa, Nigeria, Cross River State, Old Calabar, Efik people

Sansa or thumb piano consisting of a flat rectangular box of pale wood ornamented with pyro-engraved patterns, on top of which are mounted eight cane strip keys: Africa, West Africa, Nigeria, Southeastern State, Calabar, Efik people

Sansa (thumb piano), flat rectangular box of pale wood ornamented with burnt-in patterns, and mounted with eight cane strip keys: West Africa, Nigeria, Cross River State, Calabar, Efik people

Sansa comprising a hollow wooden sounding-board with eleven iron vibrating spatulate tongues fixed to it: Africa, Southern Africa, Zambia,Tanganyika Plateau, Awemba, late 19th century

Sansa with nine vibrating brass tongues secured with iron strips to a red wood board cemented to carapace of tortoise, with white shell beads embedded in the cement: Arica, Central Africa, Congo Region, late 19th - early 20th century

Sansa comprising a hollow wooden sound board fitted with vibrating iron tongues and pieces of snail shell on tin with glass beads: Africa, Eastern Africa, Malawi, Lake Malawi, mid 19th century

Sansa comprising a flat wooden case supporting a row of vibrating iron tongues secured by an iron band, with a piece of tin overlaid with shell tied to the lower sides: Africa, Malawi, Shire Highlands